340cui with .070 bore

AdamR said

If its a 4" stroke crank with a .070" over bore you'll have 425 cubes. A 412 would be a 4" crank with a .010" over bore.

To know how far a block can go safely it would need to be sonic checked.

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Thx for the quick response!
Yes it is a 4" stroke crank! I havent checked the bore yet but i plan on doing it while my heads are of, and at the same time sonic check the block!
This is the crank kit i have by the way http://www.hughesengines.com/crank_kits/408crankkit.asp

By the way how do you count the bore? Is it .070 on the radius or diameter ?

How much was the 340 bored from the beginning ? I read it was 4.04" , is this right ?



// Chrippa